I was trying to figure out how old this page was, but I'm still not certain. The headers show a "Last-Modified" of 2017, but it's definitely much earlier than that.

I think the main content dates from at least 2004 from when it was on Redhat's site: https://web.archive.org/web/20041221091001/http://people.red...

The Clarification looks to have been added in late 2006: https://web.archive.org/web/20061119024251/http://people.red...